Daniel Noboa Azín is the youngest president in Ecuador’s history and faces immediate challenges in tackling the country’s grave economic and security crises.

Cuba’s authoritarian regime has failed to avert an economic crisis, repair decaying state institutions, and prevent the country’s largest outflow of migrants since the 1960s.

The mass protests that have rocked Peru since December threaten to upend regional supply chains, intensify migration flows, and strain Lima’s bilateral relations.

Prime Minister Hun Sen retained his grip on power after Cambodia’s stage-managed elections, with his party winning 120 out of 125 seats. But his long-awaited succession plan could create chaos and co…